Sil­ver­Sneak­ers Mus­cu­lar Strength Train­ing North­east Older Adult Cen­ter, 8101 Bustleton Ave. Fri­days at 8:30 a.m. Also on Mondays and Wed­nes­days at 8:30 and 9:30 a.m. $2 per class if not covered by your in­sur­ance. 215-685-0576. More at: Klein JCC, 10100 Jam­is­on Ave. Ap­pro­pri­ate for older adults who are un­fa­mil­i­ar with ex­er­cise as well as those who are fit and act­ive. Fri­days at 9:15 a.m. and 1 p.m. Free. 215-698-7300.

Phil­adelphia Po­lice Ex­plorers Phil­adelphia Po­lice Academy, 8501 State Road. Pro­gram is for ages 14 to 20 who are in­ter­ested in a ca­reer in law en­force­ment. Sat­urdays. 10 a.m. www.pp­don­line.org (Click on Ex­plorers link).

Knit­ting Circle Nor­com Com­munity Cen­ter, 10980 Nor­com Road. This is not a teach­ing class, but a chance for people of sim­il­ar in­terest to gath­er and share their skills in a com­fort­able so­cial set­ting. All ages wel­come. Mondays. 6 to 7 p.m. 215-698-3012.

Lib­rary Klein JCC, 10100 Jam­is­on Ave. A lib­rar­i­an will be avail­able every Monday from 9 to 11:30 a.m. 215-698-7300.

Tum­bling for Chil­dren Pi­car­i­ello Play­ground, Red Li­on and Calera roads. Suit­able for ages 4 and older at all levels. $10 re­gis­tra­tion. Class fees will be col­lec­ted in three in­stall­ments. Time and cost: 215-685-9393.

Fox Chase Art Group Fox Chase Lib­rary, 501 Rhawn St. New mem­bers in­vited. Par­ti­cipants can work in any me­di­um. There are no re­stric­tions as to level of ex­per­i­ence. Free. Mondays.1 to 3 p.m. 215-731-0101, 215-335-9042.